Mechanism for squaring the ends of spiral springs.



C. W. PEGK. MEUHANISM FOR SQUARING THE ENDS 0F SPIRAL SPRINGS.

APPLICATION mum mm: 2a, 1909.

953,178. PaQtented Mar. 29, 1910.

UNIT i i'l CHARLES W. IPECK, OF FORESTVILLE, CONNECTICUT.

MECHANISM FOR SQUARING THE ENDS 0F SPIRAL SPRINGS.

To all whom it may concern:

Be it known that I, CHARLES W. PECK, a citizen of the United States, residing at Forestville, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Mechanism for Squaring the Ends of Spiral Springs, of which the following is a specification.

The object of my invention is to provide a device of the class specified which has features of novelty and advantage.

Figure 1 is a lateral view. Fig. 2 is a modification of the shoulder-bushing. Fig. 3 is a spring before the operation. Fig. 4; is a spring after the operation.

In springs of this character it is advisable to have the ends of said springs squared to apply pressure upon a flat surface instead of at a single point.

I provide an arbor -1 on the end of which I prefer to arrange my spiral spring snugly fitting said arbor. The inner end of the spring -2 rests against a shoulder as at 3 which is arranged at the proper distance from the end of the arbor by means of a bushing 4.- which can be adjusted and secured at the proper place on said arbor. My arbor is arranged in proximity to the grind-stone -5. I prefer to have said arbor longitudinally movable in the stationary uprights (3, (3--. Any well known means can be used to move said arbor toward or away from said grind-stone but I prefer to use a lever -7 to accomplish this purpose. \Vhen the tip end of the spire as at 8 engages said grind-stone the end of the spire is slightly ground down and because of said grinding the entire end spire becomes red hot, so that it can readily be bent when pressure is exerted so that the end spire will then be bent back and abut against the second spire which completes the operation of squaring the end of the spring.

I prefer to have my spring during the op- Specification of Letters Patent.

Application filed June 23, 1909.

Patented Mar. 29, 1910.

Serial No. 503,971.

oration fit snugly to the end of the arbor but where various sized springs are being squared, it is advisable to have cup shaped receptacles such as at -9 which will closely fit around the periphery of any spring that does not fit the arbor snugly. The cupshaped bushing can take the place of the bushing --4 when necessary although the bushing -4-- is preferable.

I prefer to have my spring engage the grind-stone on the side thereof in order that it may be squared more accurately than if engaging the periphery of the stone which unless the stone was exceptionally large would cause the spring to be coneaved slightly.

Claims.

1. In a device of the class specified, a guide carrying a spiral spring a grind stone and means for causing the engagement of said spring and stone.

2. In a device of the class specified, a grind-stone, a longitudinally movable arbor adapted to receive a spiral spring on the end thereof, a shoulder on said arbor for engaging one end of the spring and means for moving said arbor longitudinally whereby said spring engages said grind-stone.

3. In a device of the class specified, a grind-stone, a movable arbor adapted to receive a spiral spring on the end thereof, and means for moving said arbor whereby said spring engages sald grind-stone.

4. In a device of the class specified, a grind-stone, a movable arbor adapted to receive a spiral spring on the end thereof, said spring snugly fitting the end of said arbor.

In testimony whereof I affix my signature in presence of two witnesses.

CHARLES WV. PECK.

Witnesses JOHN W. J OY, ANNA A. BOLGER. 

